Raspberry Pi Static ip address

Edit /etc/dhcpcd.conf

sudo nano /etc/dhcpcd.conf

Add the following rows add the bottom of the text. Leave the default text intact.

interface eth0
static ip_address=192.168.1.99
interface wlan0
static ip_address=192.168.1.100
static routers=192.168.1.1
static domain_name_servers=202.62.64.3 8.8.8.8

Reboot